Android Question Open a pdf file

[Yayou49]

Hi,
Using code like this:

Sub Activity_Create(FirstTime As Boolean)
    File.Copy(File.DirAssets,"2.pdf",Starter.Shared,"2.pdf")    
    Dim intent As Intent
    intent.Initialize(intent.ACTION_VIEW,CreateFileProviderUri(Starter.Shared,"2.pdf"))
    intent.SetType("application/pdf")
    intent.WrapAsIntentChooser("Choose PDF Viewer")
    StartActivity(intent)
End Sub

Sub CreateFileProviderUri (Dir As String, FileName As String) As Object
    Dim FileProvider As JavaObject
    Dim context As JavaObject
    context.InitializeContext
    FileProvider.InitializeStatic("android.support.v4.content.FileProvider")
    Dim f As JavaObject
    f.InitializeNewInstance("java.io.File", Array(Dir, FileName))
    Return FileProvider.RunMethod("getUriForFile", Array(context, Application.PackageName & ".provider", f))   'ERROR HERE
End Sub

My manifest:

AddManifestText(<uses-permission
android:name="android.permission.WRITE_EXTERNAL_STORAGE"
android:maxSdkVersion="18" />
)

AddApplicationText(
<provider
android:name="android.support.v4.content.FileProvider"
android:authorities="$PACKAGE$.provider"
android:exported="false"
android:grantUriPermissions="true">
<meta-data
android:name="android.support.FILE_PROVIDER_PATHS"
android:resource="@xml/provider_paths"/>
</provider>
)
CreateResource(xml, provider_paths,
<external-files-path name="name" path="" />
)

I have 2 problems to solve:
1) on my physical device, when launch the apk, after requesting the app to use to open, I can see the Adobe pdf app icone 1 second and nothing more.
My pdf file is well stored and I can open it directly via adobe reader

2) How to get adobe reader on Android emulator for my test in debug mode ?

Thanks in advance for your help

 

[Erel]

1) Is this an Android 7+ device?

2) It is a waste of time to do it on the emulator. You can debug on a real device instead.

 

[Yayou49]

1) Is this an Android 7+ device?

It's an Android 7.0

 

[Mikel Huerta]

Hello Yayou and Erel , i have the same error here :

 Return FileProvider.RunMethod("getUriForFile", Array(context, Application.PackageName & ".provider", f))   'ERROR HERE

i have android 7 on moto g5

The error :

Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'android.content.res.XmlResourceParser android.content.pm.ProviderInfo.loadXmlMetaData(android.content.pm.PackageManager, java.lang.String)' on a null object reference

 

[Erel]

Hello Yayou and Erel , i have the same error here :

You should start a new thread.

@Yayou49 try to install a different PDF app.

 

[Mikel Huerta]

You should start a new thread.

@Yayou49 try to install a different PDF app.

thanks @Erel , i have created it right now, please any help are welcome.

 

[Yayou49]

@Yayou49 try to install a different PDF app.

Unfortunately, even with 3 differents pdf reader, problem is the same.
One of them send me an error "File loading error" while in the same time, open it manually on my phone with adobe reader,pdf is ok ....

 

[Erel]

As a test, try to view an image file with FileProvider. Does it work?

 

[Yayou49]

even with a JPG file, it doesn't work....
Please find enclose the zip file with a small project (pdf + JPG).

 

[Erel]

Run the example without making any change: https://www.b4x.com/android/forum/threads/share-txt-files.73166/#post-464921

Does it work?

There is a missing parenthesis in your manifest editor.